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Gnom [1K]
3 years ago
11

20 point help.brainliest will be mark

Mathematics
2 answers:
Anon25 [30]3 years ago
7 0
The first one is correct except add d
babymother [125]3 years ago
7 0

Answer:

it's 3n + 18 and 10 + 3n +8

Step-by-step explanation:

Hope this helps have a nice day :)

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Answer:

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Step-by-step explanation:

2x + y = 20                                                                                     (1)

2x + 3y = 36                                                                                  (2)

(2) - (1) ⇔ (2x - 3y) - (2x + y) = 36 - 20

          ⇔ 2y = 16

          ⇔ y = 8                                                                               (3)

From (3) and (1), we have:

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So: C = x + y = 6 + 8 = 14

Conclusion : C = 14

Brainliest, please?

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